Portable refrigeration fan

Abstract

The utility model relates to the technical field of fans, in particular to a portable refrigeration fan which comprises a refrigerator, a hollow heat exchanger and a cooling device. The heat exchanger is connected with the hot end of the refrigerator and used for dissipating heat of the refrigerator. The cooling device is communicated with the heat exchanger, the cooling device comprises a radiator and a power mechanism which are connected with each other, the radiator is used for refrigerating a medium flowing out of the heat exchanger, and the power mechanism is used for providing power for circular flowing of the medium between the heat exchanger and the radiator. And the cooled medium is conveyed into the heat exchanger. By means of the mode, it can be guaranteed that the portable refrigeration fan has efficient and lasting heat dissipation and refrigeration effects.

Description

Technical Field

[0001] The embodiment of the utility model relates to the technical field of fans, in particular to a portable refrigerating fan. Background Art

[0002] A portable refrigerating fan is a portable cooling tool, which cools through a semiconductor refrigerator inside and exports the cold generated by the refrigerator through a fan, achieving the effect of transferring cold to the human body.

[0003] The semiconductor refrigerator in the existing portable refrigerating fan usually uses fins for heat dissipation, and its heat dissipation effect is limited, thus affecting the refrigeration effect of the refrigerator. Moreover, it is necessary to use wind to blow out the heat on the fins, and a fan needs to be set at a corresponding position on the portable refrigerating fan, occupying a large space. Summary of the Utility Model

[0004] In view of the above defects of the prior art, the embodiment of the utility model provides a portable refrigerating fan, which cools the refrigerator in the portable refrigerating fan through the medium in the heat exchanger, so as to solve the technical problems of low heat dissipation efficiency and large volume existing in the prior art.

[0005] According to one aspect of the embodiment of the utility model, a portable refrigerating fan is provided. The portable refrigerating fan includes a refrigerator, a hollow heat exchanger and a cooling device; the heat exchanger is connected to the hot end of the refrigerator and is used for dissipating heat for the refrigerator;

[0006] The cooling device is communicated with the heat exchanger through a pipeline. The cooling device includes a radiator and a power mechanism connected to each other. The radiator is used for refrigerating the medium flowing out of the heat exchanger, and the power mechanism is used for providing power for the circulating flow of the medium between the heat exchanger and the radiator and conveying the cooled medium into the heat exchanger.

[0007] Optionally, the heat exchanger includes a heat exchange housing, a heat conducting plate and a plurality of heat exchange elements; the heat conducting plate is connected to the heat exchange housing and encloses a sealed accommodation cavity with the heat exchange housing. A plurality of the heat exchange elements are located in the accommodation cavity. A heat exchange input port and a heat exchange output port communicated with the accommodation cavity are arranged on the heat exchange housing; the medium flows into the accommodation cavity from the heat exchange input port and flows out of the accommodation cavity from the heat exchange output port to the cooling device.

[0008] Optionally, a plurality of the heat exchange elements are connected to the heat conducting plate in an aligned or staggered arrangement.

[0009] Optionally, the heat exchange element is one or more of a cylinder, a sheet, a square column, a triangular column or a special-shaped column.

[0010] Optionally, at least one partition is installed in the accommodating cavity, and at least one of the partitions divides the accommodating cavity into at least two interconnected medium channels, and the at least two interconnected medium channels form a bent circuit.

[0011] Optionally, two or more of the partitions are provided in the accommodating cavity, and a medium channel is formed at intervals between every two of the partitions, and the ends of adjacent two of the partitions are offset to form a channel opening, and adjacent two of the medium channels are communicated through the channel opening.

[0012] Optionally, the power mechanism is a water pump, the first input port of the radiator is connected to the second output port of the water pump, the first output port of the radiator is connected to the heat exchange input port of the heat exchanger, and the second input port of the water pump is connected to the heat exchange output port of the heat exchanger.

[0013] Optionally, the portable refrigerating fan further includes an inner housing and an outer housing, and the inner housing and the outer housing are connected to form an accommodating cavity; the refrigerator includes a first refrigerator and a second refrigerator disposed in the accommodating cavity; the heat exchanger includes a first heat exchanger corresponding to the first refrigerator and a second heat exchanger corresponding to the second refrigerator; the second input port of the water pump is respectively communicated with the first heat exchange output port of the first heat exchanger and the second heat exchange output port of the second heat exchanger; the first heat exchange input port of the first heat exchanger and the second heat exchange input port of the second heat exchanger are respectively communicated with the first output port of the radiator.

[0014] Optionally, the refrigerator further includes a third refrigerator disposed in the middle of the accommodating cavity, and the heat exchanger includes a third heat exchanger corresponding to the third refrigerator; the third heat exchange output port of the third heat exchanger is communicated with the second input port of the water pump, and the third heat exchange input port of the third heat exchanger is connected to the first output port of the radiator.

[0015] Optionally, a first air outlet hole is provided at a position corresponding to the first refrigerator on the inner housing and / or the outer housing, a second air outlet hole is provided at a position corresponding to the second refrigerator, and a mounting hole is provided at a position corresponding to the third refrigerator;

[0016] The cold ends of the first refrigerator and the second refrigerator are provided with cold conduction members, and after the air flow generated by the wind power assembly disposed in the accommodating cavity passes through the cold conduction members, the cold quantities are respectively led out from the first air outlet hole and the second air outlet hole;

[0017] A patch is installed at the mounting hole, and the patch is thermally connected to the cold end of the third refrigerator.

[0018] In the portable refrigerating fan of the present utility model, the heat exchanger inside is of a hollow structure and filled with a medium, which can be a medium with high heat exchange efficiency such as water or air. The heat exchanger is communicated with a cooling device. After the medium flowing out of the heat exchanger is cooled by the cooling device, it is then sent back into the heat exchanger to realize the heat exchange cycle at the hot end of the refrigerator, ensuring the efficient and lasting heat dissipation effect of the portable refrigerating fan. Moreover, the medium in the heat exchanger is centrally cooled by the cooling device, reducing the volume of the portable refrigerating fan. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] In order to more clearly illustrate the technical solutions in the specific embodiments of the present utility model or the prior art, the following will briefly introduce the drawings required for use in the description of the specific embodiments or the prior art. In all the drawings, similar elements or parts are generally identified by similar reference numerals. In the drawings, the elements or parts are not necessarily drawn to actual scale.

[0020] Figure 1 FIG. shows the overall structural schematic diagram of the portable refrigerating fan in an embodiment of the present utility model;

[0021] Figure 2 FIG. shows the exploded structural schematic diagram of the portable refrigerating fan in an embodiment of the present utility model;

[0022] Figure 3 FIG. shows the structural schematic diagram of the heat exchanger inside the portable refrigerating fan in an embodiment of the present utility model;

[0023] Figure 4 FIG. shows the top view of the heat conducting plate with a partition in an embodiment of the present utility model;

[0024] Figure 5 FIG. shows the top view of the heat conducting plate with multiple partitions in an embodiment of the present utility model.

[0025] 1. Heat exchange housing; 101. Heat exchange input port; 102. Heat exchange output port; 2. Heat conducting plate; 201. Heat exchange element; 202. Partition; 203. First heat dissipation row; 204. Second heat dissipation row; 3. Inner housing; 301. First air outlet hole; 302. Second air outlet hole; 303. Mounting hole; 4. Outer housing; 5. Cooling device; 501. Radiator; 502. Power mechanism; 6. First main pipe; 601. First branch pipe; 602. Second branch pipe; 603. Fifth branch pipe; 7. First refrigerator; 701. First heat exchanger; 8. Third refrigerator; 801. Third heat exchanger; 9. Second refrigerator; 901. Second heat exchanger; 10. Patch; 11. Second main pipe; 1101. Third branch pipe; 1102. Fourth branch pipe. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0026] The embodiments of the technical solution of the present utility model will be described in detail below with reference to the accompanying drawings. The following embodiments are only used to more clearly illustrate the technical solution of the present utility model, and thus are only examples and cannot be used to limit the protection scope of the present utility model.

[0027] It should be noted that unless otherwise specified, the technical terms or scientific terms used in this application should have the ordinary meanings understood by those skilled in the art to which the present utility model belongs.

[0028] In the description of this application, it should be understood that the orientation or positional relationships indicated by the terms "center", "longitudinal", "transverse", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential", etc. are based on the orientation or positional relationships shown in the drawings, and are only for the convenience of describing the present utility model and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus cannot be understood as a limitation of the present utility model.

[0029] In addition, the terms "first", "second", etc. are only used for descriptive purposes and cannot be understood as indicating or implying relative importance or implicitly specifying the quantity of the indicated technical features. In the description of the present utility model, "a plurality of" means two or more unless otherwise specifically defined.

[0030] In this application, unless otherwise clearly specified and limited, the terms "installed", "connected", "connected", "fixed", etc. should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or integrated; it can be a mechanical connection or an electrical connection; it can be directly connected or indirectly connected through an intermediate medium, and it can be the communication inside two elements or the interaction relationship between two elements. For those of ordinary skill in the art, the specific meanings of the above terms in the present utility model can be understood according to specific circumstances.

[0031] In this application, unless otherwise clearly specified and limited, the first feature being "on" or "under" the second feature can be that the first and second features are in direct contact, or the first and second features are indirectly in contact through an intermediate medium. Moreover, the first feature being "above", "over" and "on" the second feature can be that the first feature is directly above or obliquely above the second feature, or simply means that the first feature is at a higher horizontal height than the second feature. The first feature being "under", "beneath" and "under" the second feature can be that the first feature is directly below or obliquely below the second feature, or simply means that the first feature is at a lower horizontal height than the second feature.

[0032] Please refer to Figure 1 and Figure 2 , Figure 1 which shows a schematic diagram of the overall structure of a portable refrigerating fan in an embodiment of the present invention, Figure 2 and which shows an exploded structural schematic diagram of a portable refrigerating fan in an embodiment of the present invention. The present invention provides a portable refrigerating fan, which includes a refrigerator, a hollow heat exchanger and a cooling device 5; the heat exchanger is connected to the hot end of the refrigerator for dissipating heat from the refrigerator; the cooling device 5 is communicated with the heat exchanger, and the cooling device 5 includes a radiator 501 and a power mechanism 502 connected to each other. The radiator 501 is used for refrigerating the medium flowing out of the hollow heat exchanger, and the power mechanism 502 is used for providing power for the circulating flow of the medium between the hollow heat exchanger and the radiator 501 and transporting the cooled medium into the heat exchanger.

[0033] Among them, the refrigerator in the embodiment of the present invention adopts semiconductor refrigeration technology, generating cold on one side and heat on the other side. The heat exchanger is attached to the other side of the refrigerator. When the portable refrigerating fan works, the heat exchanger exchanges heat with the other side of the refrigerator, so as to ensure the working efficiency of the refrigerator. Among them, the heat exchanger is of a hollow structure and is filled with a medium, and the medium can be a medium with high heat exchange efficiency such as water or air. The heat exchanger is communicated with the cooling device 5. After the medium flowing out of the heat exchanger is cooled by the cooling device 5, it is then sent back into the heat exchanger to realize the heat exchange cycle of the hot end of the refrigerator, ensuring the efficient and lasting refrigeration effect of the refrigerator. Moreover, the medium in the heat exchanger is centrally cooled by the cooling device 5, reducing the volume of the portable refrigerating fan.

[0034] Among them, the radiator 501 can be a combination of a copper tube and a cooling fan. The power mechanism 502 introduces the high-temperature medium in the heat exchanger into the copper tube of the radiator 501. The copper tube exchanges heat with the air for cooling, and then the hot air is led out of the portable refrigerating fan by the cooling fan. The power mechanism 502 then introduces the cooled medium into the heat exchanger. In one implementation, the medium is water, and the power mechanism 502 can be a water pump. Among them, the water pump, the radiator 501 and the heat exchanger are all connected by pipelines. The second outlet of the water pump is connected to the first inlet of the radiator 501, the first outlet of the radiator 501 is connected to the heat exchange inlet 101 of the heat exchanger, and the second inlet of the water pump is connected to the heat exchange outlet 102 of at least one heat exchanger. Among them, the high-temperature water output from the heat exchanger first enters the water pump, and then is injected into the radiator 501 for cooling by the power of the water pump, and finally is transported to the heat exchanger through the pipeline.

[0035] Among them, as Figure 3As shown, in one embodiment, the heat exchanger includes a heat exchange housing 1, a heat conducting plate 2 for contacting the hot end, and a plurality of heat exchange elements 201. The plurality of heat exchange elements 201 are installed on the heat conducting plate 2. The heat conducting plate 2 is connected to the heat exchange housing 1 and encloses a sealed accommodation cavity with the heat exchange housing 1. The heat exchange housing 1 is provided with a heat exchange input port and a heat exchange output port that communicate with the accommodation cavity; the medium flows into the accommodation cavity from the heat exchange input port and flows out of the heat exchange output port to the cooling device 5. Among them, the heat conducting plate and the heat exchange elements can be made of metal materials such as copper and silver to enhance the heat exchange efficiency; the heat exchange housing 1 can be a rectangular structure, and the accommodation cavity formed in cooperation with the heat conducting plate 2 is a rectangular cavity. The heat exchange input port and the heat exchange output port are arranged on the side wall of the heat exchange housing 1 and communicate with the accommodation cavity. The medium cooled by the cooling device 5 enters the accommodation cavity from the heat exchange inlet and outlet, exchanges heat with the heat conducting plate 2 and the heat exchange elements 201, and then flows out from the medium heat exchange output port. Among them, in one implementation, the heat exchange output port and the heat exchange input port are respectively arranged on two opposite side surfaces of the heat exchange housing 1. In this way, the medium enters from one end of the accommodation cavity and flows out from the other end, increasing the heat exchange time of the medium in the accommodation cavity and enhancing the heat exchange efficiency. In another implementation, a partition 202 is installed in the accommodation cavity. The partition 202 divides the accommodation cavity into two mutually communicating medium channels. In this implementation, the partition 202 is installed on the heat conducting plate 2, and the partition 202 can adopt the same heat conducting material as the heat exchange elements 201, thereby increasing the heat exchange efficiency between the medium and the cooler; the partition 202 divides the accommodation cavity into U-shaped mutually communicating medium channels, so that both ends of the accommodation cavity are located on the same side surface of the heat exchange housing 1. At this time, the heat exchange output port and the heat exchange inlet and outlet are arranged on the same side surface of the heat exchange housing 1; similarly, as Figure 5 shown, a plurality of partitions 202 can also be installed in the accommodation cavity to divide the accommodation cavity into at least two mutually communicating medium channels, and the at least two mutually communicating medium channels form a bent circuit. Among them, the interval between every two partitions 202 forms a medium channel, and the ends of adjacent partitions are offset to form a channel opening. Adjacent two medium channels are communicated through the channel opening. And the length of each partition is the same, and the partitions are arranged in a staggered manner so that both ends of each partition can form a channel opening with the adjacent partitions, so that the bent circuit of the medium channel can be S-shaped, M-shaped, etc. Through a plurality of bent circuits, the liquid medium can have more bending times in the circuit, and the heat exchange efficiency between the liquid medium and the heat conducting plate (2) and the heat conducting elements (201) in the cut-off channel can be better, thereby ensuring the heat dissipation effect on the cooler.

[0036] The heat exchange output port and the heat exchange input port are respectively arranged at both ends of the bent circuit, thereby increasing the heat exchange time between the medium and the heat conduction plate 2 and the heat exchanger. Users can customize the type of the bent circuit according to actual needs. Among them, in one embodiment, a plurality of heat exchange elements 201 are installed on the heat conduction plate 2 in an aligned or staggered manner. A plurality of heat exchange elements 201 can be arranged to form a first heat dissipation row 203 and a second heat dissipation row 204 and installed on the heat conduction plate 2. In one implementation manner, the heat exchange elements 201 in the first heat dissipation row 203 and the second heat dissipation row 204 are aligned and on the same straight line, so as to form a flow channel in the medium flow direction, while destroying the boundary layer of the medium and increasing the flow velocity of the medium. As Figure 4 shown, in another implementation manner, the heat exchange elements 201 in the first heat dissipation row 203 and the second heat dissipation row 204 are staggered. Among them, the heat exchange elements 201 always block the medium in the medium flow direction, thereby reducing the flow velocity of the medium and further destroying the boundary layer of the medium. Among them, in one embodiment, the heat exchange element 201 is one or more of a cylindrical shape, a sheet shape, a square column, a triangular column or a special-shaped column. Among them, the heat exchange element 201 is made of a heat-conducting material, such as materials like copper and silver. As Figure 4 shown, in one implementation manner, the structure of the heat exchange elements 201 on the heat conduction plate 2 can all be cylindrical structures. Among them, it is easier to form turbulence after the cylindrical contour contacts the medium, thereby destroying the boundary layer of the medium. In another implementation manner, the heat exchange elements 201 on the heat conduction plate 2 can be a mix of one or more of a cylindrical shape, a sheet shape, a square column, a triangular column or a special-shaped column, and can also achieve the effect of destroying the boundary layer of the medium.

[0037] Among them, in one embodiment of the present utility model, the portable refrigerating fan further includes a U-shaped inner housing 3 and an outer housing 4. The inner housing 3 and the outer housing 4 are connected to form a receiving cavity; at least one refrigerator includes a first refrigerator 7 and a second refrigerator 9 arranged at both ends of the receiving cavity; at least one hollow heat exchanger includes a first heat exchanger 701 corresponding to the first refrigerator 7 and a second heat exchanger 901 corresponding to the second refrigerator 9; the second input port of the water pump is respectively communicated with the first heat exchange output port of the first heat exchanger 701 and the second heat exchange output port of the second heat exchanger 901; the first heat exchange input port of the first heat exchanger 701 and the second heat exchange input port of the second heat exchanger 901 are respectively communicated with the first output port of the radiator 501.

[0038] The coldness of the first refrigerator 7 and the second refrigerator 9 flows out from both ends of the portable cooling fan, so that the heat dissipation range of the portable cooling fan is increased. The coldness can be conducted by blowing out through wind, or forming a cooling layer on the surface of the inner shell 3, and the cooling effect is achieved by the contact between the skin and the inner shell 3. The heat exchange output ports of the first heat exchanger 701 and the second heat exchanger 901 are both connected to the second input port of the water pump. The water pump introduces the high-temperature medium into the radiator 501, and introduces the cooled medium into the first heat exchanger 701 and the second heat exchanger 901 again, so as to achieve efficient and lasting cooling effect of the first refrigerator 7 and the second refrigerator 9. In one implementation, at least one refrigerator also includes a third refrigerator 8 arranged in the middle of the accommodating cavity, and at least one hollow heat exchanger includes a third heat exchanger 801 corresponding to the third refrigerator 8; the second output port of the water pump is also connected to the third heat exchange input port of the third heat exchanger 801; the third heat exchange output port of the third heat exchanger 801 is connected to the first input port of the radiator 501. Among them, refrigerators are arranged at both ends and the middle of the portable cooling fan, and the cooling capacity derived from the refrigerator can be blown out by wind, or a cooling layer is formed on the surface of the inner shell 3, or a combination of the two. In one implementation, the inner shell 3 and / or the outer shell 4 are provided with a first air outlet 301, a second air outlet 302, and a mounting hole 303 at positions corresponding to the first refrigerator 7, the second refrigerator 9, and the third refrigerator 8; a wind power component is arranged in the accommodating cavity, and the wind power component is used to derive the cooling capacity of the first refrigerator 7 and the second refrigerator 9 from the first air outlet 301 and the second air outlet 302; a patch 10 is installed on the mounting hole 303, and the patch 10 is located on the side of the accommodating cavity and connected to the cold end of the refrigerator. Among them, considering that the user can have a large-scale and continuous heat dissipation effect when wearing it, the inner shell 3 and the outer shell 4 adopt a U structure, and a first air outlet 301 and a second air outlet 302 are arranged at both ends to guide the cold energy of the first refrigerator 7 and the second refrigerator 9 from the first air outlet 301 and the second air outlet 302 through the wind force of the wind power component, and form convection, thereby forming a heat dissipation zone where the portable cooling fan is worn through the wind force with cold energy, so as to achieve a large-area heat dissipation effect, and considering that the middle part of the inner shell 3 is in contact with the user to form a support when the user wears it, a patch 10 is arranged at the mounting hole 303, and the patch 10 can be a thermally conductive material such as copper and silver, so as to achieve a cooling effect by directly contacting the user.

[0039] Among them, in one embodiment, the third heat exchange input port of the third heat exchanger 801 can be connected to the first heat exchange output port or the second heat exchange output port of the first heat exchanger 701 or the second heat exchanger 901, and the medium output by the first heat exchanger 701 or the second heat exchanger 901 is used for cooling. Among them, the patch 10 is in direct contact with the user. To ensure the health of the user, the power of the third cooler 8 can be lower than that of the first cooler 7 and the second cooler 9. Therefore, the medium heat exchange efficiency required in the third heat exchanger 801 can be correspondingly reduced. Thereby simplifying the pipeline layout in the portable cooling fan in this embodiment and reducing energy loss. Specifically, in this embodiment, the pipelines for connecting the radiator 501, the water pump, the first heat exchanger 701, the second heat exchanger 901 and the third heat exchanger 801 include a first main pipe 6, a second main pipe 11, a first branch pipe 601, a second branch pipe 602, a third branch pipe 1101, a fourth branch pipe 1102 and a fifth branch pipe 603. One end of the first main pipe 6 is connected to the second input port of the water pump, the second main pipe 11 is connected to the first output port of the radiator 501, one ends of the first branch pipe 601 and the second branch pipe 602 are jointly connected to the second main pipe 11, and the other ends are respectively connected to the first heat exchange input port of the first heat exchanger 701 and the second heat exchange input port of the second heat exchanger 901. One ends of the third branch pipe 1101 and the fourth branch pipe 1102 are jointly connected to the first main pipe 6, and the other ends are respectively connected to the second heat exchange output port of the second heat exchanger 901 and the third heat exchange output port of the third heat exchanger 801. Both ends of the fifth branch pipe 603 are respectively connected to the first heat exchange output port of the first heat exchanger 701 and the third heat exchange input port of the third heat exchanger 801, thereby achieving the effects of simplifying the pipeline layout in the portable cooling fan in this embodiment and reducing energy loss.

[0040] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit them; although the present invention has been described in detail with reference to the foregoing embodiments, those of ordinary skill in the art should understand that they can still modify the technical solutions described in the foregoing embodiments, or perform equivalent replacements on some or all of the technical features; and these modifications or replacements do not make the essence of the corresponding technical solutions deviate from the scope of the technical solutions of the various embodiments of the present invention, and they should all be covered by the scope of the claims and the description of the present invention. In particular, as long as there is no structural conflict, the technical features mentioned in each embodiment can be combined in any way. The present invention is not limited to the specific embodiments disclosed in the text, but includes all technical solutions falling within the scope of the claims.

Claims

1. A portable cooling fan, characterized in that: The portable refrigeration fan comprises a refrigerator, a hollow heat exchanger and a cooling device (5); the heat exchanger is connected to the hot end of the refrigerator and is used to dissipate heat for the refrigerator; The cooling device (5) is connected to the heat exchanger via a pipeline, and the cooling device (5) comprises a radiator (501) and a power mechanism (502) which are connected to each other. The radiator (501) is used to cool the medium flowing out of the heat exchanger, and the power mechanism (502) is used to provide power for the circulation of the medium between the heat exchanger and the radiator (501), and to transport the cooled medium to the heat exchanger.

2. The portable cooling fan according to claim 1, characterized in that: The heat exchanger comprises a heat exchange shell (1), a heat conduction plate (2) and a plurality of heat exchange components (201); the heat conduction plate (2) is connected to the heat exchange shell (1) and encloses the heat exchange shell (1) to form a closed accommodating chamber, the plurality of heat exchange components (201) are located in the accommodating chamber, and the heat exchange shell (1) is provided with a heat exchange input port (101) and a heat exchange output port (102) which are in communication with the accommodating chamber; the medium flows into the accommodating chamber from the heat exchange input port (101) and flows out from the heat exchange output port (102) to the cooling device (5).

3. The portable cooling fan according to claim 2, characterized in that: The plurality of heat exchange elements (201) are connected to the heat conducting plate (2) in an aligned or staggered arrangement.

4. The portable cooling fan according to claim 2, characterized in that: The heat exchange element (201) is one or more of a cylindrical, sheet-shaped, square column, triangular column or special-shaped column.

5. The portable cooling fan according to claim 2, characterized in that: At least one partition (202) is installed in the accommodating cavity, and the at least one partition (202) divides the accommodating cavity into at least two mutually connected medium channels, and the at least two mutually connected medium channels form a bent loop.

6. The portable cooling fan according to claim 5, characterized in that: Two or more partitions (202) are arranged in the accommodating cavity, a medium channel is formed between every two partitions (202), the ends of two adjacent partitions (202) are offset to form a channel opening, and two adjacent medium channels are connected through the channel opening.

7. The portable cooling fan according to claim 1, characterized in that: The power mechanism (502) is a water pump, the first input port of the radiator (501) is connected to the second output port of the water pump, the first output port of the radiator (501) is connected to the heat exchange input port (101) of the heat exchanger, and the second input port of the water pump is connected to the heat exchange output port (102) of the heat exchanger.

8. The portable cooling fan according to claim 7, characterized in that: The portable refrigeration fan further comprises an inner shell (3) and an outer shell (4), wherein the inner shell (3) and the outer shell (4) are connected to form a containing cavity; the refrigerator comprises a first refrigerator (7) and a second refrigerator (9) arranged in the containing cavity; the heat exchanger comprises a first heat exchanger (701) corresponding to the first refrigerator (7) and a second heat exchanger (901) corresponding to the second refrigerator (9); the second input port of the water pump is respectively connected to the first heat exchange output port of the first heat exchanger (701) and the second heat exchange output port of the second heat exchanger (901); the first heat exchange input port of the first heat exchanger (701) and the second heat exchange input port of the second heat exchanger (901) are respectively connected to the first output port of the radiator (501).

9. The portable cooling fan according to claim 8, characterized in that: The refrigerator also includes a third refrigerator (8) arranged in the middle of the accommodating cavity, and the heat exchanger includes a third heat exchanger (801) corresponding to the third refrigerator (8); the third heat exchange output port of the third heat exchanger (801) is connected to the second input port of the water pump, and the third heat exchange input port of the third heat exchanger (801) is connected to the first output port of the radiator (501).

10. The portable cooling fan according to claim 9, characterized in that: A first air outlet hole (301) is provided on the inner shell (3) and / or the outer shell (4) at a position corresponding to the first refrigerator (7), and a second air outlet hole (302) is provided at a position corresponding to the second refrigerator (9); a mounting hole (303) is provided on the inner shell (3) at a position corresponding to the third refrigerator (8); The cold ends of the first refrigerator (7) and the second refrigerator (9) are provided with cooling members, and the airflow generated by the wind power assembly arranged in the accommodating cavity passes through the cooling member and is respectively discharged from the first air outlet (301) and the second air outlet (302); A patch (10) is installed at the installation hole (303), and the patch (10) is thermally connected to the cold end of the third refrigerator (8).

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